让我们首先创建一个int数组-
int[] arr = { 10, 20, 30, 40, 50, 60, 70, 80, 90 };
现在,使用将数组元素向左移动arraycopy()
并将元素正确放置,以使它向左移动-
System.arraycopy(arr, 1, arr, 0, arr.length - 1);
import java.util.Arrays; public class Demo { public static void main(String[] argv) throws Exception { int[] arr = { 10, 20, 30, 40, 50, 60, 70, 80, 90 }; System.out.println("Initial array...\n"+Arrays.toString(arr)); System.arraycopy(arr, 1, arr, 0, arr.length - 1); System.out.println("Array after shifting to the left..."); System.out.println(Arrays.toString(arr)); } }
输出结果
Initial array... [10, 20, 30, 40, 50, 60, 70, 80, 90] Array after shifting to the left... [20, 30, 40, 50, 60, 70, 80, 90, 90]